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породи, то їх неможливо досліджувати з розумінням.

c) Якщо збагачені породи не будуть визначені, їх буде
неможливо і вивчити.

d) Якщо би збагачені породи впевнено не визначили, їх би
не вивчили з розумінням.

VI. Test Your Understanding of the Words:

In the 6 “is hampered” most nearly means:

(a) is hindered (b) is helped

(c) is assisted (d) is facilitated

VII. Word Choice.

Find the most suitable word to complete the following
sentence:

According to Passage 3 “a photo-petroleum” becomes
modified by:

(a) mud (b) temperature

(c) undersurface (d) pressure

КОНТРОЛЬНА РОБОТА №6.

Варіант 1.

Water is the most common fluid in pore spaces in
sedimentary rocks in the subsurface. It is found in many parts of
the world within a few metres of the surface; and in most parts of
the world within a few tens of metres of the surface. Water has
been found in the deepest wells drilled, and is probably only
eliminated as free water during metamorphism.